Samuel w



(No Model.)

S. W. MARTIN.

PUMP.

Patented July 5, 1.887;

`UNITED STATES PATENT OFFICE.'

SAMUEL NV. MARTIN, OF SPRINGFIELD, OHIO, ASSIGNOR TO MAST, FOOS StCOMPANY, OF SAME PLAGE.

PUMP.

SPECIFICATION forming part of Letters Patent No 365,835, dated July 5,1887.

To all whom it may concern.-

Be it known that I, SAMUEL W. MARTIN, a citizen of the United` States,residing at Springfield, in the county of Clark and State of Ohio, haveinvented certain new and useful Improvements in Pumps, of which thefollowing is a specification, reference being had therein to theaccompanying drawings.

This invention relates to improvements in Io pumps.

My invention consists of a single uniform cylinder having two distinctplunger portions and a water-discharge between said portions, twoplunger-rods arranged to travel at unequal speeds and distances and eachhaving a plunger-one for eachpluuger portion of the cylinder-andsuitable supports for suspending the cylinder below the platform. Y

My invention further consists of the uni- 'form cylinder, plunger-rods,plungers, and,

supports for the cylinder, when combined with a head which rests uponthe platform and holds the supports, and which is constructed to allowthe rods to pass up through it and to permit the plunger-rods and theirplungcrs to -be drawn up from the cylinder and lifted out through thehead without in anywise disturb4` ing the tixed part-s of the pump.

My invention still further consists of the v 3o suitably-supportedcylinder and the two plumgers and their rods arranged so that the up perplunger can be held at rest, to close the upward escape of the water,and the lower plunger be continued in operation, whereby '3 5 theforce-pump is converted into a lift or single-acting pump capable ofbeing actuated either by hand or by power-as by a windengine-this latterbeing principallyin view, as the loss of time between the lifting action4o of the plunger allows time for the Wind-engine to regain momcntum-avery important practical consideration.

My invention yet further relates to certain featuresof construction inrespect to the snpporting-head and the actuatinghandle and itsconnection with the plunger-rods and one of said rods and thecheclevalve.

In the accompanying drawings, forming a part of this specification, andon which like 5o reference-letters indicate corresponding parts,

"xnunication with the cylinder at points be- Application filed January10, 1887. Serial No. 223,916. (No model.)

Figure 1 represents a vertical sectional View of myimprovedpump entire;Fig. 2, a sec tional view of the cylinder, showing the lower plunger andthe check-valve therein; Fig. 3, a detail plan view of the top ofthehead; Fig. 4, a cross-sectional and plan view of the head, showing theflange around the lowerend; Fig. 5, a sectional View of the upper end ofthe head and of the plunger-rods and pluugers, showing more clearly therelative sizes of the plungers and the opening in the head; and Fig. 6,a plan view of a fragment of the actuating-handle.

The letter A refers to a wellplatform, of any approved type, upon whichis mounted the holding or supporting head B. This head is preferablyconstructed in two vertical parts and substantially like the head shownand described in Letters Patent granted to me De cember 28, 1886, No.35i-,920, for improvements in pumps. It differs, however, from that headin two particulars-namely, in be ing laterally enlarged at O C, to allowthe plungers and the checlevalve to be lifted out and put down throughit, and in having'a detach able cap, D, fitted to an opening in the top.This cap on being removed also allows the vplungers and check-valves tobe withdrawn lor inserted into place, and while on the head serves tosubstantially close its upper end, and yet, by reason of the slot Etherein, permits the plunger-rods to work freely. The parts of the headare held together by bolts, as seen in dotted linesin Figs. 3 and 4, andiu seats or bearings F are placed and held the supports G. Thesesupports are, by preference, of tubular form, and in this instance oneof them forms, also, an air-chamber, and the other a dischargepipe, bothbeing in comtween the plungers.

The letter H designates the cylinder, which is uniform,or to all intentsand purposes substantially so, in diameter in both of itsplunger-working portions, of which there are two-- one for each plunger.At I the cylinder has short branches, and these branches receive thesupports. In the lower end of the cylinder a IOC) the periphery to causethe valve to seat itself snugly into the cylinder, in which case itneeds no other fastening. The valve, however, whatever be'itsconstruction otherwise, is provided `with a part with which the longerplunger-rod is readily engaged, as larms L, havinginteriorlyscrew-threaded holes at their juncture, into which that rod isentered by disconnecting it 'from the handle, letting it far enough downand then revolving it. By this means the valve is lifted out of thecylinder, should repairs or other cause require.

The letters M and N respectively refer to the longer and shorter.plunger-rods, which respectively carry the lift and force plungers Oand I). These plungers work in the respective plunger portions of thecylinder H, and are of any approved construction. The plunger I? has astuffing-box, Q,which prevents the water from rising above it and aroundthe plunger-rod M. It should be noted that the rod N is tubular and thatthe other rod passes through it. Both are connected to theactuating-handle R, pivoted in standards S of the head, one standardonly being shownM directly and N through an extension, T. The point ofconnection between the plunger-rod N, through its extension, and thehandle is preferably about half the distance between the connection ofthe rod M and the fulcrum-point of the handle. Therefore the movement ofthe plunger P is approximately halfas fast and half as long as themovement of the plunger O. This overtaking f action of the lower plungercauses it to undertake to compress the hydrostatic column between thetwo plungers, and this being a physv ie'al impossibility, being resistedby the natural solidit-y of water, results in forcing that column outofthe cylinder and upward through the discharge-pipe, as G. Themen thedownstroke,the upper plunger acts upon the water which followed it upinto upper-plunger portions of the cylinder, and forces that column out,as it is met and resisted by the column which in the meantime was formedunder the lower plunger. Thus the stream is continuous. Vhile it is afact that double-acting,` force-pumps are superior as hand-pumps tosingle-acting lift-pumps, there are yet a class of users who prefer thelatter kind of pump lwhen it is to be operated by a wind-engine.

Therefore, and to meet the demands of this class,I disconnect the longerrod from the handle and attach it to the pitman of a wind-engine,allowing the upper plunger to remain still and close the upper end ofthe cylinder, in which instance the pump is converted into asingle-acting lift-pump.

If desired, the handle can be bolted to the standard, as at U V, by thebolt which connects it with the longer rod. This insuresthe upperplunger against accidental movement. The pressure `of the water upon theunder side of the upper plunger and the weight of the handle will holdthe plunger, however.

- It will be understood that the cap D is first to the lower plunger becorrespondingly changed, and I would therefore have it understood thatsuch a change is fairly within thescopeof-this invention.Thelower-plunger portion of the cylinder and the lower plunger may ofcourse be extended indefinitely down,

as in the case of deep wells, without departing from the invention.

Having thus fully described my invention, what I claim as new, anddesire to secure by Letters Patent, is

1. In a pump, the combination with a uniform cylinder divided into twoplunger-working portions and supports connected to it, one of whichforms a discharge-pipe and communicates with the cylinder between thesaid portions, of ashorter tubular plunger-rod and a plunger working inthe upper of said portions, and a longer plunger-rod within the otherrod, and having a plunger for the lower of those portions, and a pivotedhandle, tothe shorter arm of which both of said vrods are connected, oneadj ustably, at different distances from the pivotal point.

2. In a pump, the combination, with anni- 'form cylinder divided intotwo plunger-working portions and an intermediate portion into which theplungers do not travel, supports connected to the intermediate portion,one an air-chamber and the other a discharge-pipe, and a head upon theplatform which holds the said supports, of a tubular pl linger-rodhaving a plunger for one of said plunger portions, and a plunger-rodwithin the tubular one, and having aplunger for the other of saidplunger portions, and a pivoted handle, to the shorter arm of which'theplungers are detachably connected, whereby both plungers may be operatedat different speeds and-distances, or one left to rest and the otheroperated. y Y 3. In a pump, the combination, with a cylinder dividedinto two plunger-working portions and an intermediate portion in whichthe plungers do not work, supports connected to the cylinder, one ofwhich forms a discharge-pipe and communicates with the said intermediateportion, and a suitable head to secure the supports at the platform, oftwo plunger-rods, each having a plunger, and a pivoted handle to whichsaid rods are connected, one detachably, whereby one rod may be left torest while the other is actuated to form a single-acting pump.

4. In a pump, the combination, with ahead having seats forcylinder-supports and an enroo IIO

larged interior passage through which to withdraw the working mechanism,of the tubularcylinder supports fitted into said seats and held therebyand forming a discharge-pipe and an air-chamber, a uniform cylinderdivided into upper and lowerplunger portions and open at the top, andplungerrods, one within the other, and each having a plunger, one lowerthan the other, and both rods extended up into and above the head andwith their plungers adapted to be withdrawn from the cylinder andthrough the said passage in the head.

5. In a pump, the combination, with a uniform cylinder divided intoupper and lower plunger portions and open at the top, and supportsconnected with the cylinder and extending upward to and connected with ahead, of

the head having seats which receive and hold said supports, and aninterior enlarged passage through which to withdraw'the Workingmechanism, and plunger-rods, and their plungers extending up to near theupper end of the head and through said passage in the head.

6. In a pump, the combination, with a uniform cylinder open at its upperend, of a' the opening in the head, when the cap is rel moved, of thelower Working mechanism.

In testimony whereof I affix my signature in presence of two witnesses.

SAMUEL WV. M ARTIN.

Itis hereby certified that in Letters Patent No. 365,835, granted July5, 1887, upon the application of Samuel W. Martin, of Springeld, Ohio,for an improvement in Pumps, an error appears in the printedspecification requiring correction, as follows: Inline 100, page 2, theWord adjustaloly should be stricken out and the Word detachably insertedinstead; and thatthe Letters Patent should loe read with thiscorreetiontherein that the same may conform to the record of the oase inthe Patent Ooe.

Signed, eountersig-ned, and sealed this 26th day of July, A. D. 1887.

D. L. HAW'KINS, Acting Secretary 0j' the Interior.

[ SEAL] Countersigned BENTON J. HALL,

Oo'nwnissoner of Patents.

